System Requirements

    File & folder permissions

    To ensure a stable and smoothly running Umbraco installation, these permissions need to be set correctly.

    Hosting

    Umbraco 7.x.x

    • IIS 7+ (II6 will not work because .NET 4.5 is incompatible with Windows Server 2003)
    • SQL CE, SQL Server 2008 and higher or MySQL (must support case insensitive queries)
    • ASP.NET 4.5 Full-Trust
    • Ability to set file permissions to include create/read/write (or better) for the user that "owns" the Application Pool for your site (NETWORK SERVICE, typically)

    Umbraco 6.x.x

    • IIS6+ (IIS 7 Preferred)
    • SQL CE, SQL Server 2008 and higher or MySQL (must support case insensitive queries)
    • ASP.NET 4 Medium-Trust/Full-Trust (Should work in Medium-Trust environments, but Full-Trust is still preferred)
    • Ability to set file permissions to include create/read/write (or better) for the user that "owns" the Application Pool for your site (NETWORK SERVICE, typically)

    Umbraco 4.7.x

    • IIS 6+ (IIS 7 Preferred)
    • SQL CE, SQL Server 2008 and higher or MySQL (must support case insensitive queries)
    • ASP.NET 4, MVC 3
    • Medium-Trust/Full-Trust (Should work in Medium-Trust environments, but Full-Trust is still preferred)
    • Ability to set file permissions to include create/read/write (or better) for the user that "owns" the Application Pool for your site (NETWORK SERVICE, typically)

    Umbraco 4.6.x (Codename JUNO)

    • IIS 6+ (IIS 7 Preferred)
    • SQL Server 2005+
    • ASP.NET 4
    • Medium-Trust/Full-Trust (Should work in Medium-Trust environments, but Full-Trust is still preferred)
    • Ability to set file permissions to include create/read/write (or better) for the user that "owns" the Application Pool for your site (NETWORK SERVICE, typically)
    • Possible to run in virtual directory, though still recommended not to

    Umbraco 4.5.x

    • IIS 6+ (IIS 7 Preferred)
    • SQL Server 2005+
    • ASP.NET 3.5+ (ASP.NET 4.0 Preferred)
    • Medium-Trust/Full-Trust (Should work in Medium-Trust environments, but Full-Trust is still preferred)
    • Ability to set file permissions to include create/read/write (or better) for the user that "owns" the Application Pool for your site (NETWORK SERVICE, typically)
    • Possible to run in virtual directory, though still recommended not to

    Umbraco 4.0.x

    • IIS 6+
    • SQL Server 2005+
    • ASP.NET 2.0+
    • Full-Trust (High-Trust is the minimum; Medium-Trust will not work)
    • Ability to set file permissions to include create/read/write (or better) for the user that "owns" the Application Pool for your site (NETWORK SERVICE, typically)
    • Virtual directories are not supported

    Browsers

    The Umbraco UI should work in all modern browsers:

    Umbraco 7.x.x

    • Firefox (Latest)
    • Chrome (Latest)
    • IE10+ (will not alway work correctly in lower versions)

    Umbraco 4/6

    • Firefox (Latest)
    • Chrome (Latest)
    • IE7+